Skip to content

Most visited

Recently visited


Save and retrieve sign-in credentials with Smart Lock for Passwords

With Smart Lock for Passwords you enable frictionless sign in to apps on Android and sites in Chrome, with any account. Users can automatically sign in to your app on any device with their saved credentials.

Why it works

By integrating Smart Lock for Passwords, you reduce the missed conversion opportunities that occur when users get frustrated trying to sign-in and move on to another activity. Once your user saves a password to Smart Lock, they can skip entering their credentials on all of their Chrome and Android devices.

Key features

  • Complements the capabilities of Firebase Authentication. Smart Lock extends an automatic sign-in experience to any account, across devices.
  • Assists your site’s and app’s existing sign-in system, it doesn’t replace it. Smart Lock simply passes usernames and passwords to the app, which means you don’t have to change any of your existing backend identity management and user identification.
  • Users can save both username-password credentials and federated identity provider credentials.


This site uses cookies to store your preferences for site-specific language and display options.

Get the latest Android developer news and tips that will help you find success on Google Play.

* Required Fields


Follow Google Developers on WeChat

Browse this site in ?

You requested a page in , but your language preference for this site is .

Would you like to change your language preference and browse this site in ? If you want to change your language preference later, use the language menu at the bottom of each page.

This class requires API level or higher

This doc is hidden because your selected API level for the documentation is . You can change the documentation API level with the selector above the left navigation.

For more information about specifying the API level your app requires, read Supporting Different Platform Versions.

Take a short survey?
Help us improve the Android developer experience. (April 2018 — Developer Survey)